Duck Dynasty's Jase Robertson at OC

Jase Robertson from A&E's Duck Dynasty spoke for a standing-room-only crowd at Oklahoma Christian University's Chapel service on Monday.

Jase came to OC with his wife, Missy, and their three children. Prior to Chapel, he did a video shoot with Oklahoma Christian president John deSteiguer ... standing in the OC Pond. (Click here to watch the video.)

"The Bible is a weapon of mass instruction, and a love letter from God Almighty. And the message is clear - He is for you, not against you," Jase said during his Chapel talk. "The power is in the message. Share the message and let God water the seed."

Duck Dynasty is the most-watched program in the history of the A&E Network. The premiere of its third season on February 27 was the No. 1 cable show of the week.